direnv: add info for version 2.20.0 (#13007)
direnv: add info for version 2.20.0 (#13007)


LLNL/spack,LLNL/spack,iulian787/spack,iulian787/spack,LLNL/spack,LLNL/spack,iulian787/spack,iulian787/spack,iulian787/spack,LLNL/spack